ELF-64 Object File Format

This document describes the current HP/Intel definition of the ELF-64 object file format. It is, for the most part, a simple extension of the ELF-32 format as defined originally by AT&T, although some fields have been rearranged to keep all fields naturally aligned without any internal padding in the structures. Additional detail about the ELF-32 format may be obtained from any of the following sources: * Unix System V Release 4 Programmer’s Guide: ANSI C and Programming Support Tools * System V Application Binary Interface, Revised Edition * System V Interface Definition, Third Edition * Tool Interface Standards: Portable Formats Specification, Version 1.0 The processor-specific details of the ELF formats are covered in separate supplements. As much as possible, processor-specific definitions apply equally to ELF-32 and ELF-64. Many implementations of ELF also include symbolic debug information in the DWARF format. We regard the choice of debug format as a separate issue, and do not include debug information in this specification.